Robust Optimal Frequency Response Enhancement Using Energy Storage-Based Grid-Forming Converters

To enhance frequency and active power control performance, this research proposes a decentralized robust optimal tuning approach for power grid frequency regulation support using energy storage systems (ESSs) as the primary source of grid-forming (GFM) converters. The proposed approach employs the r...

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Bibliographic Details
Published inEnergies (Basel) Vol. 17; no. 19; p. 4948
Main Authors Rehimi, Sharara, Bevrani, Hassan, Tarimoradi, Hadi, Urabe, Chiyori T., Kato, Takeyoshi, Kato, Toshiji
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.10.2024
Subjects
Alternative energy sources
Automation
Batteries
Control algorithms
Energy storage
energy storage systems
frequency support
grid-forming converters
Inertia
Kharitonov theorem
optimal tuning
Optimization
robust control
Systems stability
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Summary:To enhance frequency and active power control performance, this research proposes a decentralized robust optimal tuning approach for power grid frequency regulation support using energy storage systems (ESSs) as the primary source of grid-forming (GFM) converters. The proposed approach employs the robust Kharitonov theory to find a family of stabilizing sets of a proportional-integral (PI)-based supplementary controller, which is used in the outer control layer of the GFM control system. A family of stabilizing parameter sets is found in the presence of system uncertainties and disturbances that are common in power grid operation. Then, using a developed Bayesian optimization algorithm, an optimal set of parameters is determined among the mentioned family member sets. The proposed sophisticated combination of a robust control theorem and an optimization algorithm provides a promising solution for the robust and optimal tuning of control system parameters in ESS-based GFM converters. The efficacy of the proposed method is demonstrated via simulation and laboratory real-time experiment results for a given detailed case study.
ISSN:1996-1073
1996-1073
DOI:10.3390/en17194948